console.log('0000000');

var fs = require('fs');
fs.readFile('01_Nodejs/02_code/1.txt','utf8',function(err, data){
    console.log(data);
})

console.log('222222');

console.log('==============');

fs.readFile('01_Nodejs/02_code/1.txt','utf8',function(err, data){
    console.log(data);
})

fs.readFile('01_Nodejs/02_code/2.txt','utf8',function(err, data){
    console.log(data);
})

fs.readFile('01_Nodejs/02_code/3.txt','utf8',function(err, data){
    console.log(data);
})